Duplicating-machine.



H. G. GAMMETER. DUPLIUATING MACHINE. I APPLICATION FILED JUNE 13, 1908. LQ5E 3'TK Patented Ja11.21,1913.

2 SHEETS-SHEET 2.-

C-|IIIIIIIII a citizen of the embodiment shown in HARRY C. GAMMETER, OF BRATENAHL, OHIO, ASSIGNOR TO THE AMERICAN MULTI- GRA'JPH COMPANY, OF CLEVELAND,

OHIO, A COBlORATION OF OHIO.

DUPLIGATINGr-MACHINE.

Specification of Letters Patent.

Patented J an. 21, 1913.

375,169. Divided and this application filed June 13.

1908. Serial "No. 438,309.

To all whom it may concern:

Be it known that I, HARRY C. GAMMETER, United States, residing at Bratenahl, in the county of Cuyahoga and State of Ohio, have invented aoertain new and useful Improvement in Duplicating- Machines, of which the following is a full, clear, and exact descriptiom'reference being had to the accompanying drawings.

My prior application No. 37 5,169, of which this is-a division, shows and claims a printing machine wherein there is .an oscillating type carrying segment, anunderrunning rotary impression platen and an inking ribbon passing between the segment and platen and having one end mounted on a spool carried by. the segment and the other end on a stationarily mounted springbarrel.

The. present application relates to the means for carrying the type form in the oscillating frame. The means for oscillating that frame are covered in a divisional application, Serial No. 497,906, filed May 24, 1909, the other features of the invention being covered in the parent application referred to.

In the drawings, Figure 1 is a front elevation bf the machine; Fig. 2 is a vertical central section thereof; Fig. 3 is aside elevation; Fig. 1 is a vertical section in a plane parallel with Fig. 3,-Fig. 5 is a perspective of the type employed.

Referring by reference numerals to the the drawings, 10 represents a suitable base, at the opposite ends of which are vertical web 11 which continue upward in the form of standards 12 and 13. J ournaled in these two standards near their upper ends is the shaft" 14:. Mounted on this shaft is the oscillating frame which, with a segmental type form carried thereby, constitutes the printing member. This oscillating frame has hubs 15 surrounding and pinned to the shaft 14, and extending from the hubs are spider arms 16 which at their outer ends carry the arc-shaped rim members 17 These rim members are recessed or rabbeted, as shown at 18, the outer wall of the rabbet being inclined or under cut. The rabbets of the two rim members thus cooperate to produce in edect a wide dove-tailed recess adapted to receive the removable arcshaped plate 20. This plate has its edge beveled correspondingly to' the sides of the recesses. The plate carries projecting rails 21 having T-heads and thus adapted toreceive between themlrows of type 25 having grooves to cooperate with the T-rails, as shown in Figs-{l and 5.

The type holding plate-20 is locked be tween the rim members 17 by means of the rods 27' which extend across the printing member, passing through one of the rim members and screwing into the opposite rim. member, as shown'in Fig. 2. The rods 27 have angular heads 29 seating in recesses in the right hand rim member 17. These recesses'allow a suitable socket wrench to be placed over the head to turn the rod, such turning loosening the plate 20 so that it may be removed, or clamping it rigidly in place. a

It will be seen that when the plate 20, loaded with type, is clamped in place by the rods 27- as above explained, my machine provides a rigid rocking segmental member carrying individual printing" type. The type carrying member, however, may

very easily removed to allow assemblage of type thereon or distribution of type there from. This removable type-carr ing segment also allows the page form 0 be left standing when not in use, another typecarrying segment being substituted for it. There will be supplied a number of these type-carrying segments and the ease with which they may be removed and replaced, as well as the comparatively small space into which they may be stored, makes it very convenient to keep a number of page forms standing ready for instant use.

At the right hand end of the machine, the central spider arm 16 is shown as having a long radial slot 30 bounded by a reinforc+ ing web .31. Into this slot extends a roller 32 carried by a crank arm 33 mounted on the inner end of ashort shaft 34 journaled in the frame standard 12. On the outer end of this short shaft is secured a crank 35 having a handle 36. By means of this handle the crank may be rotated, the roller and slot connection thereby rocking or oscillating the swinging frame. The crank being rotated in the lefthan'd direction, the drum surface is driven rearward, comparatively slowly owing to the roller at such time being in the lower portion of the slot 30. The return stroke, however, is rapid, as the give the printing surface just the movement desired. The mechanism described in this paragraph is covered in myrdivisional application Serial No. 497,906, referred to.

Located below the printing member and cooperating with it is the rotary impression platen 40, which is positively driven by a pinion 48 connected therewith and meshing with ear teeth 49 on the printing member. etween the oscillating frame'and the platen extends the inking ribbon 70, the rear end of which is carried by a spool 81 mounted on such frame, while the forward end wraps around a spring barrel 71. The mechanisms for platen adjustment and for ribbon feed are not specifically a part of this application, being covered with other features in the parent application referred to. They will, however, be briefly described for the sake of completeness.

The platen is journaled on a shaft 41 which has reduced eccentrically placed extensions 42 and46 journaled in bushings in the frame. One of these bushings 43 is preferably adjustable by means of an arm 44, shown at the left hand end of the machine. On the right hand end the shaft extension 42 is. adjustably connected with an arm 50 which extends vertically when the platen is in position to coact with the type, the arm being retained in this position by a dog 55. This is the position of the parts when the printing surface swings rearwardly, the paper being drawn between theprinting surface and the platen and thereby impressed.

At the end of the rearward movement of the printing member, an inclined cam lug 60 thereon engages beneath a pin 61 projecting inward from the dog through a slot 62. This raises the dog to release the arm 50, whereupon the shaft 41 is immediately rocked rearward by the spring 57 engaging its left hand end, the arm 50 coming to rest by engaging the cushioned stop pin 59.

The platen is thus swung downward, out of the way of the type so that the latter may return without impressing the platen. As such return stroke is just being completed, an arm 65, carried near the rear end of the printing member and having a fork 66, engages a pin 58 on the arm 50 and returns it to upright position, thus swinging the platen into active position,the arm 50 being held in this position by the dog 55 reengaging its upper end.

The inking ribbon is a page wide, and,

tween the platen and as heretofore stated, is mounted at its forward end on a spool surrounding and frictionally engaging a spring barrel 71. This barrel has an internal shaft 72 connected with the tubular exterior by a helical spring, not shown. On the head of the shaft 72 is a knob 74 by which the shaft may be turned to tighten the spring.

From the spring barrel, the ribbon passes over a guide rod 76, then rearwardlybeprinting member and under a guide roller carried near the rear end of the printing member. From this point, the ribbon passes onto the upper side of the spool 81 carried at the rear side of the printing member, this spool being held by a spring 88 with its other end in engagement with a 'short shaft 82 at the rear of the printin member, mounted in the lug 83. Secure on this shaft is a ratchet wheel 84, acted on by a pawl 85 on the arm 65, heretofore referred to. When this arm 65 engages the pin 58 on the arm 50, and returns that arm to normal position on the reverse stroke of the same movement swings the arm 65 upward and thus the pawl 85 drives the ratchet. 84 rearward and gives the spool aslight turn, feeding the ribbon. Such winding of the spool is held by a suitable detent pawl 86 which engages a suitable ratchet, a second ratchet 87 being shown "for this purpose.

The spring barrel maintains the desired tautness of the ribbon at all times. As the spring in the barrel becomes wound up, by the feeding of the ribbon, the spool slips on the barrel, thus preventing excessive tension.

The paper to be printed rests on the table 90 between guides 91, which are adjustably held thereto to set screw 89. 'The paper is shoved rearward by hand in the embodiment shown, and its forward edge passes upward along the guide plate 92, which is a continuation ofthe table 90, and behind the guide plate 93. The forward edge of the paper thus is directed between the platen and the spring-pressed feed roller 94. The paper being thus engaged is'drawn upward by the platen and passes under guide rod 76 and thence rearwardly between the platen and inking ribbon and is lmpressed by the type through the ribbon, the printed sheet being discharged at the rear above the horizontal,portion of the frame 10.

97 indicates an inking roller adjustably mounted which may be employed, if desired, either to ink the type to replenish the lnibbon or for direct printing without a ribon. It will be seen from the above description that my invention provides a very compact and simple'hand operated printing the crank feeds machine. The rotation of printing member, this the printing surface during the printing at the desired speed, and when the printing is accomplished returns it very rapidly to initial position, the platen and ribbon being out of action. After the printing has been accomplished, to change the form it is only necessary to apply a Wrench to the heads 29 of the bolts, loosening them and remov ing the segment, which may be replaced by a new segment or by the same segment refilled, as desired.

Having. thus described my invention, I claim:

1. In a duplicating machine, the combina tion of a frame, a shaft carried thereby, a pair of segmental rim members carried by the shaft, said rim members having overhanging edges facing each other, a segmental plate adapted to seat against such or'erhangs and havlng parallel rails for holding individual type, and means for the edges of said segment to hold it in place.

In testimony whereof, I hereunto affix my signature 1n the presence of tWo witnesses.

HARRY C. GAlllMETER.

Witnesses:

"W. DUNLAP, ALBERT H. BATES. 

